Cuong.test 2391

Summary

This document describes a 16 V - 280 mA power supply set in non-isolated flyback topology with the VIPer16LN, a new offline high-voltage converter by STMicroelectronics.

The features of the device include an 800 V avalanche rugged power section, PWM operation at 60 kHz with frequency jittering for lower EMI, current limiting with adjustable setpoint, on-board soft-start, and safe auto-restart after a fault condition.

Moreover, the VIPer16LN can work with or without the auxiliary winding. Operating with the auxiliary winding, it can attain very low standby consumption. Operating without the auxiliary winding, the IC is supplied by an internal current generator, thus saving the cost of the transformer’s auxiliary winding. Both possibilities are discussed in this application note.

The protections available include a thermal shutdown with hysteresis, delayed overload protection, and open-loop failure protection (available only if the auxiliary winding is used).

Specifications

Manufacturer	STMicroelectronics
Category	AC/DC and DC/DC Conversion
Sub-Category	AC/DC SMPS - Single Output
Eval Board Part Number	497-8838-ND
Eval Board Supplier	STMicroelectronics
Eval Board	Normally In Stock
AC Voltage	115 V 230 V Universal
Outputs and Type	1 Non-Isolated
Voltage Out	16 V
Current Out	250 mA
Output Power	4 W
Features	Current Limit (Adj. or Fixed) Frequency Jitter for EMI Short Circuit Protection Soft Start Thermal Protection
Efficiency @ Conditions	>80%, 115V in, 16V @ 25 ~ 100% Load (w/o Self-Supply) >76%, 115V in, 16V @ 50 ~ 100% Load (w/ Self-Supply) >74%, 230V in, 16V @ 25 ~ 100% Load (w/o Self-Supply) >70%, 230V in, 16V @ 50 ~ 100% Load (w/ Self-Supply)
No-load Input Power @ Voltage	22 mW @ 115 V (w/o Self Supply) 29 mW @ 230 V (w/o Self Supply) 110 mW @ 115 V (w/ Self Supply) 224 mW @ 230 V (w/ Self Supply)
Switching Frequency	60 kHz
Internal Switch	Yes
Component Count + Extras	27 + 3
Voltage In	90 ~ 265 VAC
Design Author	STMicroelectronics
Application / Target Market	Auxiliary Power Supply Battery Chargers Set-Top Boxes
Main I.C. Base Part	VIPer16LN
Date Created By Author	2011-08
Date Added To Library	2019-05